Pressure relief valve for use with concrete pumping system



FIG. 1 front elevational view showing my new design,

FIG. 2 is a left side elevational view, it being understood that a right side elevational view is a mirror image hereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

CLAIM I claim the ornamental design for a pressure relief valve for use with concrete pumping system, as shown and described. 